Single-cylinder double-acting pump



Patented Apr. 4', 1922.

P. A. RECORDS.

APPLICATION FILED APH. I8. 1921.

MW/ww zf'g El UNITED STATES PATENT oFFlcE.

SINGLE-CYLINDER DOUBLE-ACTING PUMP.

mii-1,5115.

T o all whom t may 'concern ABe it known that I, PAUL A.. RECORDS, a citizen of the United States, K residing at Perryton, in the county of Ochiltree and 'State of TeXaS, have invented certain new "and useful Improvements in' Sin -le-Cylin- 'der Double-Acting Pumps, ofwhic the fol- I lowing is a specification, reference being had to the 5a`c"coinp`anying drawings.

The present invention has for its purpose the` provision fof a pump of this .character involving a single cylinder containing two pistons and valves connected in such wise that when operated, the water or other fluid may herv pumped or `elevated upon upward and downward strokes of the pump rod.

Anotherpurpose involves the provision of pair of pistons fand valves, one valve carried by each piston, in combination with means operatively gearing the pistons together, so "as to operate in unison, whereby one 'or lthe other of the pistons will act to impart a lifting .movement to the water or other `Huid, so that at all times a continuous How of fluid may be allowed to discharge from the pump. f u u Still another purpose is the provision of a pump of this character, wherein a single reciprocating pump rod is employedi'or actuating the pistons, which are so operatively connected, that uponmovement of one piston, the other operates toward or from the first piston, thereby creating a continuous lifting of the fluid.

A further purpose involves the provision of fluid lifting'fmeans of a continuous discharging type particularly suitable for use in connection for well pumping, to insure a Y continuous Y flow of water from the well ump Vhile the designand construction at present illustrated and set forth is deemed preterable, it isv obvious that as a result of a reduction of the invention to a more practical fornnfor commercial purposes, the invention may be susceptibleof changes, and the right changes is claimed, provided they are comprehended within thescope of whaty yis claimed. 'Y Y* I A ,Y p Y The invention comprises further features and combination of parts, as willbehereinafterset forth, 'shown in the drawings and claimed. A

lffhe dfwgs'? 1 is a sectional 'view through the Specification of Letters Patent.

Patented Apr. 4, 1922,

Application led April 18,11921. Serial No. 462,299.

improvedsingle cylinder double acting Referring to the drawings, l designates a cylinder which may be any suitable length or diameter suitable for the purpose, and mounted upon the cylinder and p secured thereto in any suitable manner preferably by shrinking or otherwise is a fianged ring 2. This ring 2 .is threaded into the upper end of an elongated steel tube or barrel 3, which may be any suitable length, and into the lower end of which the water or other fluid is adapted to enter, to be lifted to the upper end of the' cylinder l.y .By the provision o the ring 2, the cylinder is connected to the steel tube or barrel rigidly. The cylinder l is designed to extend down to the bottom of the tube or barrel, sol that the water or other fluid to be lifted may be easily and quickly drawn into the cylinder. Thelower end ofthe cylinder is provided with aplurality of arcuate recesses or openings 4, so that the lowerend `of the cylinder will be spaced at intervalsy from the bottom of the tube or barrel, .in order to permit the water or other iiuid to enter the cylinder. p

yA top or cover 5 is provided for the cylinder, and the upper circular V wall has a packing gland or stuffing boxing 6, through which the piunp rod 7 reciprocates The upper end 'of the ypump ro'd 7 is threaded as at 8, there being a handle `9 secured thereon .by the upper and lo-wernuts .10, `above and below the handle, so as to hold the handle in place.

Theflange 1l of the cover or top engages about the upper end of the cylindrical wall Y of the cylinder l, and the lower part ofv this fiange at diametrically opposite lpoints has slots 12, and the edges of the slots terminatepin ears 1 3 extendingat right angles "to the ange, andreceive bolts 14`orldrawills the .Hnge fight about thefvlnden The top or cove' A5 has a discharge spent 15, te

ilo

the journals or pins `between the diametrically opposite parts of the wall of the cyliir der l, so as to hold the sprockets centrally located on the journals.

Passing about the sprockets 19 and 20 is a sprocket chain 22, Yand mounted in the lower part of the cylinder 1 is a piston rod Y 23. The rod 7 also constitutesa piston rod,

vtherefore the adjacent ends of the rod 7 and the rod 23 are connected to opposite sides of thel sprocket chain 22,V by means of `cotter pins 24. Each cotter pin straddles a link 1n the chain, or one side of a link, and is passed throu h an opening in the end of its respective ro The ends of the cotter pin are clinched or bent laterally, so as to in- `sure a rigid connection between the two rods and the chain. -Ob'viously when the pump rod 7 is moved downwardly, the piston rod 23 will move upwardly, and vice versa.

Reciprocating in the cylinder are upper and lower pistons 25 and 26. The piston 25` has anopening through which the pump rod 7 passes with frictional engagement,

there being a dowel pin 27 threaded through `the pistonV and intothe rod, so that the piston 25 may move with the rod. The piston 2 5 has an annular groove, wherein a piston rlng 28 is mounted, in order to have a wipl ing engagement with the inner surface of the cylinder, as the piston reciprocates. The piston 26 is fastened to the lower end of "the iston rod 23 by means of the upper and ower nuts 29 and 30, which. are threaded upon the rod, to hold the piston rigidly thereon. The rod 23 passes through the piston, in order to carry the nuts 29 and 30 above and below the piston. The piston 26 also has a groove 28a, toy receive a piston rin 28", to provide a wiping engagement wit the inner surface of the cylinder.

openings 31 and 32, there` being flap valves TheV pistons 25 and 26 are provided with 33 and 34 secured on the upper faces of the pistons by means of rivets 35, whereby the i, i es valves may automatically close and open the openings 31 .and 32. In fact the Hap valves are constructed of any suitable pliable materiah'such as leather or the like, so that they will easily open on the downward movements of the piston, due to the pressure of water beneathlthem, and automatically close upon upward strokesof the pistons, due to the pressure of water-above. Therefore it is obvious that as the pump rod 7 jiisieciprocated, power being imparted thereto by any suit able means, preferably in this instance by means of manual power applied to the handle 9 the sprocket chain 22 is operated, which iiiturn reciprocates the piston rod When the pump 7 moves downwardly,

opening 32, automatically opening the valve 34, and locate in the cylinder 1 above the piston 26. The water thenabove the piston 26 will be lifted owing to its pressure closing the flap valve 24 on` the upward stroke of the piston 26. Continuous reciprocating movements of the pump rod-7 will insure a constant lifting of. the water o r other Huid, as one or the other ofthe pistons isat all times imparting a lifting action to the water or other fluid. A l

In Figures 3 and 4 the structure is slightly modified, and instead of the` endless chain 22, the adjacent parts of the rods 7a and 23a are provided with rack teeth 36, which mesh with the pinion or gear 37, which is mounted upon a pin or shaft 38. A metallic boxing or coupling 39 connects the adjacent ends of the'rods 7 and 23?*,so as to not only hold the rack teeth in connection with the pinion or gear, but also with the rods,'during their reciprocating movements. Obviously upon the downward movement of the rod 7 movement will be imparted to the gear or pinion, which in turn will impart an upwardmovement to the rod 232 The pin or shaft 38 is mounted in bearings of the boxing o r coupling 39, so as to insure holding the parts connected together operatively.

The boxing or coupling 39 is alsocentrally spaced inthe cylinder lby meansl of spacing sleeves 31, and theshaft or pin 38 has its ends swaged as at 40, to holdthe same in position. r

The invention having been set forth, what is claimed as beinguseful is 1. In au operating mechanismtor -an opposing piston pump, a cylinder provided with an inlet at one end and a discharge Y opening at the other end, opposing pistons in said cylinder and provided with openings4 and valves for controlling the fluid through said openings, opposing piston-rods oiyset v from and operable toward and from each other in directions longitudinallythrough the cylinder, upper and lower spaced jpur130 nals located between lthe pistons, revoluble members rotatably mounted upon said journals, sleeves upon the journals on opposite sides of the revoluble members for holding them centrally disposed midway between the opposing parts of the wall of the Cylinder, and means operatively connecting said revo luble members and in turn connected to the adjacent ends of said rods, whereby upon op-y erating one of said rods, both rods move 'from and toward each other, thereby correspondingly operating the pistons.

2. In an opposing piston pump, a cylinder having its opposite ends provided with inlet and discharge openings, opposing piston rods operable longitudinally through the cylinder toward and from each other and in offset planes, opposing pistons movable with said rods and providedv with openings and valves controlling the luid through the openings, upper and lower spaced journals fixed in the opposing parts of the wall of the cylinder, revoluble members mounted upon the journals, spacing sleeves carried by the journals on opposite sides of the revoluble members, an endless Connector engaging said revoluble members, and means comprising a- Cotter pin detaohably connecting the endless Connector and the adjacent ends of the pis.- ton rods, whereby upon moving one rod, movement is imparted to the other.

In testimony whereof I hereunto aflix my signature.

PAUL A. RECORDS. 

